The difference between this variable and FTOTVAL and HHINCOME is described in my answer to your previous question. Also note, most information regarding the differences between variables is available online on each variable's description tab.

The key difference between each of these variables is ADJINC is a person-level variable and FTOTVAL and HHINCOME are both household-level variables. Importantly, however, FTOTVAL reports aggregated income totals based on the US Census' definition of "family", while HHICOME is based on a straitforward, yet ridged, definition of "household".

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